Railroad-buffer construction.



F. RAWIE.

' RAILROAD BUFFER CONSTRUCTION.

APPLICATION FILED MAR. 23, 1915.

l ,294, l 89 Patented Nov. 7. 1916.

FRANZ RAWIE, OF OSlIAZERil'CEi-SCHINKEL, GERMANY.

RAILRQAD-BUFFEB CONSTRUCTION.

Application filed March 23, 1915.

To all whom it may concern:

Be it known that L FRANZ Rawm, a citizen of the German Empire, and resident of Osnabriick- Schinkel, Germany, have invented certain new and useful Improvements in and Relating to Railroad-Buffer Constructions, of which the following is a specification.

My invention relates to such railroadbufl'er constructions in which the buffer is adapted to make a sliding movement in the direction of the rails and consists in a simple construction of a jamming device for taking up the impact of the rolling stock when meeting the buffer.

The invention is illustrated on the accompanying drawing which shows three embodiments of my new buffer jamming device.

Figures 1 to 1 show a slidable railroadbuffer construction with wedge-shaped jamming device in side elevation, end view and in sectional side view and in sectional end view on a larger scale of the jamming device itself. Fig. 5 shows a part of a railroad buffer in sectional side view provided with a roller jamming device. Figs. 6 and 7 show a modified construction in side view and end view with the brake member jointed to the buffer. Figs. 1 and 2v show the buffer proper provided at its front and back end with guide ways 1 forming shoes for the rails 2 of the track. The guide, ways 1 have an expanded portion at that end which is the forward end in the direction of movement which is imparted to the buffer on impact of the rolling stock. 3 indicates a wedge-shaped jamming device which is resting according to the showing of the drawing on the top side of the rail 2 and extends into the expanded portion of the guide way 1.

The operation of this device is as follows: On impact of the rolling stock against the buffer the bufier is displaced in the direction of the arrows shown in the figures. In consequence of this displacement of the buffer the expanded portion of the guide way 1 is moved toward the thicker end of the wedges 3 so that these wedges enter the expanded portion of the guide way 1 and firmly jam the guide ways against the rails 2 so that considerable friction is produced between the inner surfaces of the guide ways 1 and the surfaces of the rails 2 contacting therewith. This strong frictional Specification of Letters Patent.

Patented Nov. *7, 1916.

Serial no. 16,446.

contact between the rails 2 and the guide ways 1 gradually consumes the cinematic energy of the rolling stock.

The embodimentshown in Fig. 5' is distinguished from that of Figs. 1 to 4: only in so far as the wedge-shaped jamming bodies 3 are substituted by rollers i which are loosely mounted on the rails 2 within the expanded portion of the guide way 1. The operation of this form of construction is substantially the same as that of the construction shown in Figs. 1 to 1.

The embodiment shown in Figs. 6 and is distinguished by the substitution of the loose jamming bodies 3 1- by a brake shoe 5 jointed to the buffer by a lever 6. On impact of the rolling stock against the buffer the buffer is again displaced with relation to the jamming device 5, 6 as above described so that the brake shoe 5 is firmly placed on the rail 2 and again produces firm frictional contact between .the guide way 1 of the buffer and rail 2.

Of course, various forms of jamming deices may be used in connection with a buffer construction according to this invention and such various jamming devices may be arranged in different ways with relation to the rails; for instance the jamming devices may contact instead of with the top surface with any other rail surface considering the fact that for securing the effect aimed at it is only necessary that by some kind of jamming device a strong frictional contact between a guide way of the buffer and a fixed guiding member is required.

in some cases it has been found advisable to provide for a somewhat intimate contact between the jamming member and the guiding member of the buffer which is firmly connected with a ground already in rest position. Such increased frictional contact between the jamming member and the guiding member may be obtained in any suitable way by pressing the jamming member against the guiding member for instance by means of a spring or by a weight. Such pressing of the amming member against the firm guiding member has the effect of securing a prompter biting of the buffer when pushedforward under the impact of the rolling stool: against the jamming member so that the sliding way of the bufier on the rails under the impact of the rolling stock is shortened and made more uniform. A amming member which is not pressed against the guiding member may be pushed forward by the buffer without producing a proper jamming action so that a buffer construction according to this invention without a jamming member pressed against the guiding member is less reliable than a construction wherein the jamming member is pressed against the guiding member. Consequently the guiding members which are brought in strong frictional contact with a guide way of the buffer by said jamming devices need not to be the rails 2 themselves but may be formed by some other members firmly mounted on the ground allowing displacement of the buffer in the direction of the rails under the contact of the rolling stock.

I also wish it to he understood that my invention is not bound to the jamming of the buffer proper with relation to some guiding member but the jamming eifect may also be exerted on some buffer element which is only in loose connection with the buffer such as the movable railroad supports connected to the buffer proper which I have shown in my former Patent No. 991081.

After each displacement of the buffer under the influence of the impact of the rolling stock the buffer may be returned to its initial position. Of course, such returning of the buffer to the initial position may be effected automatically by the pull of a weight connected to the buffer or its elements which undergo displacement uncer the influence of the impact of the rolling stock. All these things are obvious to expert-s so that they need not to be described in detail.

lVhat I claim is:

1. A slidable railroad-buffer construction comprising a bufier proper, a guide member connected thereto, a guide member cooperating with said buffer guide member in firm connection with the ground, said cooperating guide members so arranged as to allow displacement of the buffer in the direction of the rails and a jamming mem ber held by pressure against said guide member fixed to the ground and adapted to be shifted in contact therewith, said jamming member further adapted to automatically jam a bufier element when sliding in one direction and to automatically give it free movement when sliding in the opposite direction.

2. A slidable railroad-buffer construction comprising a buffer proper provided with a guide way having an expanded section, a guide member within said guide way allowing a slidingmovement of the buffer in the direction of the rails and a jamming body arranged loosely within said expanded section of the buffer.

3. A slidable railroad-buffer construction comprising a buffer proper, a plurality of guide members, a plurality of ways secured to said buifer and slidably mounted on said guide members, and jamming devices arranged to automatically jam said bufier when sliding in one direction and to automatically give it free movement when sliding in the opposite direction.

4. A slidable railroad-buffer construction comprising a buffer proper, a plurality of guide members, a plurality of guide ways each having an expanded section secured to said buffer and slidably mounted on said guide members, and jamming devices arranged within the expandedsections of said guide ways and adapted to automatically jam said buffer when sliding in one direction and to automatically give it free movement when sliding in the opposite direction.

5. A slidable railroad-buffer construction comprising a buffer proper, track rails, a plurality of guide ways each having an expanded section secured to said buffer and slidably mounted on said track rails, and jamming devices arranged within the expanded sections of said guide ways and adapted to automatically jam said buffer when sliding in one direction and to automatically give it free movement when sliding in the opposite direction.

6. A slidable railroad-buffer construction comprising a buffer proper, track rails, a plurality of guide ways each having an expanded section secured to said buffer and slidably mounted on said track rails, jamming devices arranged within said expanded sections of said guideways and means for holding said jamming devices by pressure against the surface of the rails and adapted to be shifted along same and further adapted to automatically said buffer when sliding in one direction and to automatically'give it free movement when sliding in the opposite direction.

In testimony whereof I have signed this specification in the presence of two subscribing witnesses.

FRANZ RAWVIE.

W'itnesses HENRY HASPER, VVOLDEMAR HAUPT.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C. 

